Moving a tree is easy, and there's no digging required.
1. Click the Default Cursor Button on the Toolbar.
2. Choose Objects from the Edit menu.
3. In the Camera View, the cursor will become a small tree. Pass the cursor over the tree you want to move and a square will appear around the target tree.
4. Drag the tree to its new location.
Now let's cancel the tool.
5. Click the Default Cursor Button again.